I just put on the C4 grip on my stand up paddle. My paddle is 78″ long and the blade is 8.5″. I have another one that’s 80″ long which I use for downwind paddles and when I let my friends use my other boards. I think I installed it wrong but it still works. I don’t know if I like the grip diameter being so big but it does make the paddle easier on my hands and add a lot of extra grip. I like that it’s a bright color which makes it easy to spot in the water if I drop it. The downside is that when it gets dirty it looks really dirty.